So you all think i should take out all the beads and only use sponges int the filters?
Scott, ask yourself, "what are the beads actually doing?"
They're providing area for bacteria to colonize. Welp, the sponges do the same thing, while also pulling out detritus.
Not to poopoo on other's suggestions, but the heavy object on top of the lid is not a good idea. They are designed to pop up when they get full to allow water to bypass and go back into the tank. Without this mechanism, the water can only go out the back of the filter and onto the floor. You will not get that visual indicator this way.
Plus, it's good for your fish to clean their filter.
I use sponge prefilters on some of my tanks where there is sand and/or duckweed near the liftube opening. It clogs very quickly as all of the water is pulled through a smaller surface area than the sponges in the filter box. Ill continue to do it, but only in tanks where duckweed/sand is an issue.